Answer:I believe that the answer is c
Explanation: photosynthesis gives us oxygen to breath therefore it is helpful to humans
The answer is B for the apex answer
Answer:
The frequency of the electromagnetic wave is 7.22891566 × 10¹⁴ Hz
Explanation:
The wavelength of the electromagnetic wave, λ = 415 nm
The speed of an electromagnetic wave, c ≈ 3.0 × 10⁸ m/s
Given that an electromagnetic wave is a periodic wave, we have;
The speed of the electromagnetic wave, c = f×λ
Where;
f = The frequency of the electromagnetic wave
Therefore, we have;
f = c/λ
From which we have;
f = (3.0 × 10⁸ m/s)/(415 nm) = 7.22891566 × 10¹⁴ /s = 7.22891566 × 10¹⁴ Hz
The frequency of the electromagnetic wave, f = 7.22891566 × 10¹⁴ Hz
In Fisher esterification, sulfuric acid is used as a catalyst and its function is to convert the carboxylic compound in its conjugate acid. This favours the nucleophilic attack of the alcohol. To act as a catalyst you need a strong acid, therefore sulphuric acid is suitable for this kind of reaction.
Answer:
The answer is
<h2>4.69 mL</h2>
Explanation:
The volume of a substance when given the density and mass can be found by using the formula
From the question
mass of wood = 4.6 g
density = 0.98 g/mL
It's volume is
We have the final answer as
<h3>4.69 mL</h3>
Hope this helps you
